Medical term:

dys-


dys-

 
word element [Gr.], bad; difficult; disordered.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

dys-

(dis), This Greek prefix denotes difficulty (dyspnea), pain (dysmenorrhea), or trouble (dyskinesia). There is currently a tendency to include these meanings among those of the Latin prefix dis- (or to respell dys- as dis-).
Bad, difficult, un-, mis-; opposite of eu-.
[G.]
Farlex Partner Medical Dictionary © Farlex 2012

dys-

Medtalk prefix Greek; abnormal, bad, impaired, mis-, not good, difficult, nonfunctional
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

dys-

Prefix meaning bad, difficult, un-, mis-; opposite of eu-.
Compare: dis-
[G.]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

dys-

Prefix denoting disordered, defective, difficult, bad or abnormal.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

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